The total baryon content in the Universe is a well-defined quantity, in addition to being one of the most important cosmological parameters. A variety of observations (CMB, Ly-alpha forest, Big Bang nucleosynthesis) indicate that all baryons amount to around 4% of the total matter-energy content of the Universe. However, in the local Universe the contribution of all the observed components represents around 2% of the total. Therefore, half of the baryons in the local Universe remain elusive. In this article we have presented measurements of the kinematic Sunyaev-Zel’dovich effect in Planck

El director del IAC, Rafael Rebolo, junto con otros representantes de esta institución asistieron hoy a la Jornada "Oportunidades financieras y tecnológicas para proyectos empresariales de I+D en el campo de la Astrofísica en Canarias"

A study of the binary system “MY Camelopardalis” published in the journal Astronomy & Astrophysics, shows that the most massive stars are formed by the merging of other smaller stars, as theoretical models predicted.

This radioastronomer is lecturing at the Winter School of the IAC dedicated to the relation between statistics and astrophysics

This scientist gave the closing lecture at the XXVI Winter School of the IAC about Bayesian methods applied to astrophysics

This cosmologist lectured via videoconference at the IAC Winter School on “Bayesian Astrophysics”